Conical musical box from the German brand Hape. It is wound mechanically by turning the body itself.
In addition to the music (approximately 1 minute, according to my estimate), the notes and stars change color as they rotate against the backdrop of a rainbow-colored core.
This is a cool gadget for kids of different ages and for adults. I checked the descriptions on various websites, and it's claimed that it helps infants start crawling and soothes them. Overall, there's a lot of positive information about the toy on the Hape website.
You can see the quality (German brand, manufacturing controlled in China), and there are many shallow scratches (I think the child really enjoyed it and played with it all over the house), plus it has a cool design. The top is made of wood.
Dimensions:
Base: 10.8 cm in diameter
Height: 10.39 cm